An aluminum-based composite heat dissipation material with good optical properties for LEDs
An aluminum-based composite and optical performance technology, applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of insufficient insulation performance and cost constraints, and achieve the effects of fast heat dissipation, long service life, and bright and concentrated light
Inactive Publication Date: 2014-11-26
MAANSHAN WANXIN CASTING
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Problems solved by technology
Existing LED heat dissipation materials are mainly made of metal materials such as aluminum and copper. In actual use, there are disadvantages such as cost limitations and insufficient insulation performance. Therefore, it is necessary to improve the formula of the material to achieve a better heat dissipation effect. , improve the performance of the lamps and prolong the service life
Method used
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Experimental program
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Effect test
Embodiment
[0012] The LED heat dissipation material in this embodiment is made of the following raw materials in parts by weight: aluminum 75, indium oxide 0.5, kaolin 8, aluminum sulfate 4, cutting copper fiber 15, acicular wollastonite powder 18, and additive 5.
[0013] The auxiliary agent is made of the following raw materials in parts by weight: zinc stearate 3, fluorocarbon emulsion 3 with a solid content of 45%, magnesium salicylate 5, sodium borate 1, inorganic germanium powder 8, tetraacicular zinc oxide Whisker 15, the preparation method is: first dissolve sodium borate in an appropriate amount of water to prepare an aqueous solution with a concentration of 9.0%, then add magnesium salicylate and four-needle zinc oxide whiskers, mix and ball mill for 2 hours, and then mix the obtained slurry Dry it, then mix it with other remaining ingredients, stir and disperse it for 3 hours, and then dry it to make a 400 mesh fine powder.
[0014] The manufacturing process of the aluminum-ba...
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The invention relates to lamp heat dissipation materials and particularly relates to an aluminum-based composite heat dissipation material with good optical properties for LEDs and a producing method thereof. The heat dissipation material is prepared from following raw materials by weight: 70-75 parts of aluminum, 0.5-0.6 part of indium oxide, 6-8 parts of kaolin, 2-4 parts of aluminum sulfate, 12-15 parts of cutting type copper fiber, 15-18 parts of aciform wollastonite powder and 4-5 parts of auxiliary agents. The heat dissipation material integrates advantages of the aluminum, the copper fiber, the wollastonite powder and other raw components, and has properties of heat conduction and insulation. The indium oxide can improve the optical properties of the material, and increase the transmittance of light and heat. The kaolin and the aciform wollastonite powder, which are dipped by a diluted solution of the aluminum sulfate, are more compatible with other raw materials and improve the sintering effects. The heat dissipation material has characteristics of compact structure, good mechanical properties, rapid heat dissipation, high thermal stability, capability of being durable in use, high chip luminous efficiency, light and centralized light rays, and long lamp service lifetime.
Description
technical field [0001] The invention relates to a heat dissipation material for lamps, in particular to an aluminum-based composite heat dissipation material for LEDs with good optical performance and a production method thereof. Background technique [0002] LED is called the fourth-generation light source, which has the advantages of energy saving, environmental protection, safety, low energy consumption, and high brightness. It is widely used in daily life. The heat dissipation performance of the LED lamp itself is very important, which directly affects the service life of the lamp. and lighting effects. Existing LED heat dissipation materials are mainly made of metal materials such as aluminum and copper. In actual use, there are disadvantages such as cost limitations and insufficient insulation performance. Therefore, it is necessary to improve the formula of the material to achieve a better heat dissipation effect. , Improve the performance of lamps and prolong their ...
Claims
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IPC IPC(8): C22C21/00C22C1/05C09K5/14
Inventor 张立安魏明军
Owner MAANSHAN WANXIN CASTING